Monitoring, Analyzing, and Modeling for Single Subsidence Basin in Coal Mining Areas Based on SAR Interferometry with L-Band Data

Figure 6

The fine analysis and interpretation for the deformation map in Geting Coal Mine in the interval from 10th January to 25th February, 2010. (a) is the original differential interferogram over the Geting Coal Mine in range direction and azimuth direction coordinate system. It has carried out the interferometric processing, removal of the flat-earth phase, and phase filtering. There are 3 fringes in the interferogram. That is to say, the maximum subsidence is about 35 cm. (b) is the geocoded deformation map in the Geting Coal Mine. It has carried out the phase unwrapping, the conversion from the deformation phase to land subsidence, and geocoding. The UTM (Universal Transverse Mercator) projection is selected in the map projection processing. The pixel size of geocoded map is 5 m. (c) The deformation contours in the Geting Coal Mine are shown. The deformation contours from outer to inner are −2 cm, −5 cm, −10 cm, −15 cm, −20 cm, −25 cm, and −30 cm, respectively. (d) The subsidence profile along the coal mining working face is shown.

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